The plot follows the children—Julian, Dick, Anne, George—and their dog Timmy as they go camping near a derelict, ruined cottage on the moorland near Kirrin.
This series was recorded on film rather than video tape, making it one of the most expensive children’s shows produced at that time. "The Famous Five" Five on a Secret Trail(1978)
Some viewers criticized the 1978 adaptation for its use of "dark filters" during nighttime scenes, which can make the footage difficult to see even in remastered versions. The plot follows the children—Julian
They soon discover a gang of criminals is using the cottage to search for a hidden secret tunnel. This tunnel reportedly contains a "precious blueprint" that the criminals are desperate to recover. "The Famous Five" Five on a Secret Trail(1978)